I really need help??

5× 1/2 = ? a) more than 5 because you are multiplying by a whole number b) 5/10 because you multiply the numerator and denominator by 5 c) less than 5 because you are multiplying by a number that is more than 1 d) less than 5 because you are multiplying by a number that is less than 1

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

Sketch one cycle if the cosine function y=2cos2theta